#region License
// This file is part of Simon Squared
// 
// Simon Squared is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
// 
// Simon Squared is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
// 
//  You should have received a copy of the GNU General Public License
// along with Simon Squared. If not, see <http://www.gnu.org/licenses/>.
#endregion
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Phone.Reactive;

namespace Flatlings
{
    public class Dispatcher
    {
        private Queue<Action> _actions = new Queue<Action>();

        public IDisposable BeginInvoke(Action action)
        {
            lock (_actions)
            {
                _actions.Enqueue(action);

                return Disposable.Create(() => { });
            }
        }

        public void ProcessQueue()
        {
            var snapshot = default(Action[]);
            lock (_actions)
            {
                snapshot = new Action[_actions.Count];

                for (int i = 0; i < snapshot.Length; i++)
                {
                    snapshot[i] = _actions.Dequeue();
                }
            }

            foreach (var action in snapshot)
            {
                action();
            }
        }
    }
}
